Indoor marijuana growing - Page 4

EC meters for cannabis cultivation

EC meters for cannabis cultivation

EC meters are a very useful tool when growing cannabis since they allow growers to have full control over the nutrition of their plants. Today, with tens of nutrient brands offering their own formulations, it may be difficult to find the correct dosage for your plants, especially when nutrients or additives of different brands are mixed. Well, with the help of an EC meter you can easily check the exact amount of nutrients contained in your nutrient solution, which, as you'll see in this article, makes things a lot easier.

Read more

0 Comments

Flowering in Cannabis plants

Flowering in Cannabis plants
45 days, buds are fattening with the resin piling on

Cannabis plants go through different stages of life before reaching harvest. These stages are: germination, pre-growth, growth and flowering. Depending on the phase of life, the care and feeding required can vary greatly, in this case we're going to focus on the flowering period of cannabis and the changing nutritional demands upon our plants.

Read more

9 Comments

Substrates for growing cannabis

Substrates for growing cannabis
Huge cannabis plant grown in soil

Cannabis plants have a remarkable capacity to adapt to the environment they grow in, a great advantage for us growers as it frees us to select the type of substrate best suited to our needs from the wide range available on the market that serve perfectly as growing media for cannabis.

In this post we will look at the different substrates and the variants of each of them, highlighting the fertilisers to be used and the peculiarities of each substrate, enabling you to choose the one that best suits your needs, whether it is for ease, production, quality , or simply because you want to innovate or try new cultivation techniques.

Read more

0 Comments

Quick guide to assemble your cannabis grow tent

Quick guide to assemble your cannabis grow tent
4. Your grow light is ready

How to get your cannabis grow tent ready to grow:

In this post we'll tell you how to properly assemble and install all the necessary devices in your grow tent to start your indoor grow. This step-by-step guide basically explains how to install your air extraction fan and activated carbon filter, how to mount your grow light and how to program your timers. Let's get started then!

Read more

0 Comments

Tips to avoid stretching cannabis plants

Tips to avoid stretching cannabis plants

What is the stretch?

Stretching is what we canna-cultivators call the natural vertical growth spurt put on by cannabis plants during the early stages of flowering, and more notable in Sativa varieties and Sativa/Indica hybrids. Most varieties that display this characteristic will finish stretching by the third or fourth week of 12/12 photoperiod and start to fill out the bud sites, while some strains can continue stretching for a considerably longer time.

Stretching is largely looked upon as something to be avoided at all costs when growing cannabis. This is due to the multitude of problems that can be caused by a grow room full of tall and spindly plants, reducing production as plants outgrow the cultivation area and reach up into the lights, shading lower bud sites and causing weak, airy bud growth. In other words, spoiling all our carefully laid plans for keeping an even canopy throughout the flowering period and definitely not maximising the efficiency of our grow space or lamps.

Read more

7 Comments

Rooting clones with Green House Feeding Bio Enhancer

Rooting clones with Green House Feeding Bio Enhancer

As some of you may know, we've recently added the new Green House Feeding Bio range of nutrients for plants to our catalogue, which is composed of three excellent products. On the one hand, we have two completely organic base nutrients in powder form, one for the growth phase (Powder Feeding BioGrow) and another one for the bloom stage (Powder Feeding BioBloom). On the other hand, we have a highly efficient root stimulator called Additive Feeding Enhancer, which we'll test in this article.

GH Feeding Enhancer is a complete mix of humic acid (75%), fulvic acid (3%), seaweed extract (10%, Ascophyllum nodosum), Trichoderma harzianum (10%), Bacillus subtilis, alginic acid, manitol, fucoidan and several amino acids (alanine, aspartic acid, glutamic acid, glycine, isoleucine, leucine, lysine, methionine, phenylamine, proline, tyrosine, valine and tryptophan). This complex provides the root system of your plants with all the necessary elements for explosive growth, plus extra protection against several phytopathogens that may harm the root ball. Furthermore, it also enhances nutrient uptake while stimulaitng microbial life, improving the vitality and resistance of plants against adverse conditions.

Read more

0 Comments

How to grow cannabis plants in clay pebbles

How to grow cannabis plants in clay pebbles

Growing with clay pebbles

Expanded clay pebbles are a widely used growing medium in the world of hydroponic cultivation. It’s a lightweight, roughly spherical, red ceramic aggregate with a high iron content. Before it can be used, it must undergo several different processes during manufacture. The most important of these steps is heating at extremely high temperatures, causing the rapid expansion of the clay and trapping air in pores within the odd-shaped balls. Clay pebbles have many uses besides hydroponic growing, also being widely used in construction as lightweight aggregate and thermal insulation, etc.

The size of clay pebbles can vary from 5 mm for the smallest to 15mm for the very largest kind. It must be noted that bigger clay pebbles will retain moisture  more easily and for a longer time than those of smaller size.

In this post we will focus on explaining how to properly employ clay pebbles in cannabis cultivation and avoid any potential problems using this hydroponic culture medium.

Read more

6 Comments

How to grow cannabis plants in coco coir

How to grow cannabis plants in coco coir

Coco coir as substrate for plants

In this post we'll explain how to properly use coco coir as a substrate for our cannabis plants. After years of experience with this growing medium, we believe that coco coir is the easiest choice among hydroponic substrates.

To get the most out of it, first of all we should take a closer look at its composition and properties.

Read more

23 Comments

Vapour pressure deficit (VPD) in cannabis cultivation

Vapour pressure deficit (VPD) in cannabis cultivation

What is vapour pressure deficit?

Often, cannabis growers who have their plants in indoor grow tents or rooms with artificial lighting, take into account parameters such as temperature and relative humidity to maximize plants growth and bloom, thus obtaining abundant harvest with top quality flowers. As we will see later, these factors affect different processes of the plant, such as transpiration or nutrient uptake.

However, we usually forget about another important factor that is related to the aforementioned ones: vapour pressure deficit or VPD. Broadly speaking, VPD is the difference between the amount of water vapour that the atmosphere is able to retain (which depends on temperature) and the amount of water vapour contained in it (relative humidity). It is usually measured in kilopascals (kPa).

Read more

14 Comments

The effect of cold on cannabis plants

The effect of cold on cannabis plants

Cannabis as a plant species grows wild in many places of our planet Earth. As a result, we can find a great diversity of cannabis genetics worldwide. Across the different regions where these plants are found, there are significant environmental and geographical differences in altitude, latitude, temperatures, humidity, photoperiod, etc.

Read more

34 Comments

Growing cannabis in Rockwool

Growing cannabis in Rockwool

How to grow  in Rockwool

  1. History of Rockwool
  2. How to stabilise Rockwool
  3. How to germinate seeds in Rockwool
  4. How to root cuttings in Rockwool
  5. How to grow in Rockwool
  6. Recycling Rockwool

1. History of Rockwool

Read more

11 Comments

Ballasts for growing cannabis plants

Ballasts for growing cannabis plants

Ballasts and growing cannabis plants indoors

When we are about to set upe an indoor marijuana growing space, there are many factors to take into account if we want our plants to enjoy proper ventilation, lighting, etc. If we grow with discharge lamps (HPS or MH) we are going to need a ballast to correctly operate our lighting system.

The main doubt that can arise is whether to choose a magnetic or an electronic ballast. Electronic ballasts are a step forward in lighting systems for growing cannabis, replacing the traditional power transformer of the magnetic ballasts with electronic components.

Although the price of most electronic ballasts is a little higher than that of magnetic ones, they have a number of advantages in comparison with these:

  • Electronic ballasts are lightweight, smaller and they practically don’t emit heat
  • They're much more efficient, with a better use of the electrical consumption
  • They are more silent, compared to the vibration emitted by magnetic ballasts
  • They lengthen the lifespan of the lamps and reduce flickering
  • Most of them have dimmers that allow us to control the light output according to the needs of our plants

Read more

0 Comments

Electrical conductivity and cannabis

Electrical conductivity and cannabis

What is EC or electrical conductivity ?

In this post we look at the concept of EC or electrical conductivity with regard to cannabis growing and explain its importance to obtain good results in our crops.

Read more

0 Comments

Light-Reflectors for growing cannabis indoors

Light-Reflectors for growing cannabis indoors

The best reflectors for indoor cannabis growing

Reflectors are, along with the light-bulb and the ballast, one of the three main components of indoor lighting systems. They have the purpose to support the bulb-holder and reflect the light emitted by the bulb downwards the plants (in the most uniform possible way). It isn?t difficult to imagine that both the manufacturing materials and especially the design of the reflector will largely determine its quality and features.

The reflector is then responsible for directing the light emitted by the bulb toward the plants. The light reflection and distribution capacity of the reflector mainly depends on the shape and the material of which it?s made of. Most grow tents and growing spaces are square, so the shape of the reflector should distribute the light evenly in this space, avoiding illuminating one area of the crop more than another, which would create heat pockets.

Besides the kits where everything is included, like the LEC CMH lighting kit, there is a multitude of options on the market regarding reflectors for indoor grow lights, both for novice and for advanced and professional growers. Alchimia has made a selection among the best options to put at your disposal the best reflectors, from the simplest to the most professional models, without forgetting the practical air-cooled reflectors like Cooltube.

Read more

3 Comments

Growing cannabis with Botanicare nutrients

Growing cannabis with Botanicare nutrients

Cannabis and Botanicare nutrients

Today we present you a grow report of Bubble OG Kush regular seeds using the Pure Blend Pro range of nutrients formulated by Botanicare.

For this crop, we used coco coir from Biobizz, a substrate that we know well and that will allow us to determine the quality of this new range of fertilizers, new on the European market but well known by American users, both indoor and outdoor farmers.

Read more

3 Comments

About this Cannabis Blog

This is the official blog of Alchimia Grow Shop. This blog is intended exclusively for the use of adults over the age of 18 years.

To buy equipment for growing cannabis at home you can consult our catalogue of cannabis seeds, grow shop and paraphernalia


Subscribe to the blog

Do you want to receive all the latest developments, news and curiosities from the world of cultivation?

(+34) 972 527 248
(+34) 972 527 248
keyboard_arrow_up Chat on Telegram